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【单选题】
下列朗伯-比尔定律的适用条件错误的是( )A.
入射光为激光
B.
需要稀溶液
C.
可用于分子吸收
D.
可用于原子吸收
E.
以上都对
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皮皮学刷刷变学霸
举一反三
【单选题】Internal scale economies occur when:
A.
expansion of output by a firm leads to greater specialization of labor.
B.
expansion in an industry drives down the input prices.
C.
industry growth leads to a greater diffusion of knowledge among firms.
D.
a firm pays higher input prices to expand production.
【单选题】______ various internal and external sources of finance that a business can employ when seeking to fund its operations.
A.
It exists
B.
There exist
C.
There is
D.
It does
【单选题】Internal scale economies occur when:
A.
Firm growth leads to more specialization by workers.
B.
Industry growth gives rise to better input markets.
C.
Industry growth leads to a greater diffusion of knowledge among firms.
D.
Firm growth drives up prices of some of the firm’s inputs.
【单选题】B类网络的缺省子网掩码为( ). (3分)
A.
255.255.255.255
B.
255.255.255.0
C.
255.255.0.0
D.
255.0.0.0
【单选题】When is the internal temperature of a large desert mammal lowest?
A.
Just before sunrise.
B.
In the middle of the day.
C.
Just after sunset.
D.
Just after drinking.
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